Decoherence of Einstein–Podolsky–Rosen steering and the teleportation fidelity in the dynamical Casimir effect

Long, Yumei; Zhang, Xue; Tao, Zheng

doi:10.1007/s11128-020-02833-z

Cited by 4 publications

(1 citation statement)

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“…Usually, the inevitable interaction between them will induce decoherence of the quantum system. That's to say the quantum state will degrade to a classical ones under such effect [9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24]. As this issue is concerned, the effects of decoherence on quantum correlations in various solid spin system have been investigated extensively in the past years [25][26][27][28][29][30][31][32].…”

Section: Introductionmentioning

confidence: 99%

Dynamics of Einstein–Podolsky–Rosen steering in Heisenberg model under decoherence

Wang

Gong

Zhao

2021

Quantum Inf Process

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Symmetric quantum correlations and their properties have been investigated extensively in spin chain model under decoherence. However, the asymmetric ones, e.g., Einstein-Podolsky-Rosen steering, have been attracted smaller amount of attention in this issue. In this work, we study the dynamics of Einstein-Podolsky-Rosen steering, measured by steering robustness R, for a two-qubit Heisenberg XYZ chain with inhomogeneous magnetic field by taking account of decoherence effect. The influences of magnetic field and anisotropic parameter on steering robustness are investigated for different initial states. It is found that the phenomenon of steering sudden death as well as sudden birth appears during the evolution process for particular initial states. Furthermore, the asymmetric property of Einstein-Podolsky-Rosen steering is focused and analyzed in detail. It is shown that the asymmetric steering is directly linked to the initial state as well as the external non-uniform magnetic field. Meanwhile, we find that there always exists asymmetric steering even the magnetic field is homogeneous for both the initial two-qubit pure state |10 and asymmetry mixed ones.

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